The folks at FiveThirtyEight had a fun data visualization discussion during their regular election chat this week, about whether Hillary Clinton should focus on ensuring victory next month or spending more money in “red” states to expand her Electoral College map.

Included in the release was a note that six more counties had flipped to “majority minority,” as the bureau calls them. These are counties in which non-Hispanic whites represent less than half the population.

With those six, the country now has at least 352 counties — about one in 10 of the total — in this category. Here they are on a map:

The Daily Viz

These counties exist largely because because of the relative size of the Hispanic and black populations (though Hawaii and Alaska have high Asian population rates), depending on geography. Western counties have higher percentages of Hispanic residents, and counties in the Deep South have higher rates of black residents. Of course there are some exceptions sprinkled throughout the country.

This map shows the rate of “minority” residents by county:

The Daily Viz

This map shows the percentage of Hispanic residents by county:

The Daily Viz

This map shows the percentage of black residents by county:

The Daily Viz

You can download the data here. Tomorrow we’ll examine how these counties voted in the 2012 presidential election.